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Remove two popcount patterns which we are already able to recognize.
author
Shuxin Yang
<shuxin.llvm@gmail.com>
Thu, 13 Dec 2012 23:16:19 +0000
(23:16 +0000)
committer
Shuxin Yang
<shuxin.llvm@gmail.com>
Thu, 13 Dec 2012 23:16:19 +0000
(23:16 +0000)
llvm-svn: 170158
llvm/lib/Target/README.txt
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diff --git
a/llvm/lib/Target/README.txt
b/llvm/lib/Target/README.txt
index
8165f5b
..
a9aab86
100644
(file)
--- a/
llvm/lib/Target/README.txt
+++ b/
llvm/lib/Target/README.txt
@@
-262,22
+262,7
@@
unsigned countbits_slow(unsigned v) {
c += v & 1;
return c;
}
-unsigned countbits_fast(unsigned v){
- unsigned c;
- for (c = 0; v; c++)
- v &= v - 1; // clear the least significant bit set
- return c;
-}
-BITBOARD = unsigned long long
-int PopCnt(register BITBOARD a) {
- register int c=0;
- while(a) {
- c++;
- a &= a - 1;
- }
- return c;
-}
unsigned int popcount(unsigned int input) {
unsigned int count = 0;
for (unsigned int i = 0; i < 4 * 8; i++)